PLEASE HELP Describe the balance or imbalance of forces when you use your body to elevate off the ground and then you land. At what point(s) are the upward and downward forces balanced?

Janelle made a hypothesis bout the uneven temperatures inside her house during winter. she believes that 50% of the ducts are blocked and she plans to investigate. if she wants to prove her hypothesis using scientific processes what should she do next?

What is the temperature in degrees celsius of a substance with a tempature of 49k

If the spring constant k of a pogo stick is 3500 n m and the weight of the person on the pogo stick is 700 n, how much is the spring in the botom of the pogo stick compressed?